Science
Mechanism of Action
This polyglyceryl ester primarily functions as a non-ionic emulsifier, effectively stabilizing oil-in-water emulsions by bridging immiscible phases. On the skin, it establishes a non-occlusive protective film that significantly reduces transepidermal water loss (TEWL). This action supports the skin's natural barrier function, leading to improved hydration and enhanced skin conditioning due to its structural affinity with natural skin lipids.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Exhibits robust stability within a moderate pH range of 4.0 to 8.0 and is generally compatible with most cosmetic ingredients. Stability can be compromised by extreme pH conditions, which may induce ester bond hydrolysis. Its oleate chains contain unsaturated bonds prone to oxidation, necessitating the inclusion of appropriate antioxidants for optimal shelf life, particularly in long-term formulations.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has affirmed its safety, along with 273 other polyglyceryl fatty acid esters, when used in cosmetic formulations at non-irritating concentrations.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Polyglyceryl-4 Pentaoleate is a valuable ingredient for achieving stable oil-in-water emulsions while simultaneously providing enhanced skin barrier support across all skin types.
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References
Sources